Marine Exhaust Gas Water Tube Boiler – Reliable Heat Recovery for Shipboard Systems
Product Overview
As a leading marine exhaust gas water tube boiler supplier, we deliver compact, high‑efficiency boilers designed to capture waste heat from ship diesel engines and convert it into usable steam or hot water. The water‑tube design provides rapid steam generation, superior pressure tolerance, and a low water inventory—critical for the constrained spaces and variable loads typical of modern vessels. Our units are engineered for continuous duty cycles, meeting the rigorous reliability standards required by naval architects, ship owners, and offshore operators.
How It Works
Exhaust gases from the main propulsion engine flow through a heat‑exchange matrix of stainless‑steel tubes. Water circulates inside these tubes, absorbing thermal energy and turning into high‑temperature steam. Because the water resides inside the tubes (rather than around them), the system tolerates higher pressures (up to 25 bar) and responds quickly to load changes, making it ideal for vessels that vary speed frequently. The generated steam can be directed to auxiliary systems such as cargo heating, tank cleaning, or propulsion‑assisted turbines, thereby reducing fuel consumption and emissions.
Technical Specifications
| Parameter | Typical Range | Unit |
|---|---|---|
| Steam Generation Capacity | 200 – 1,200 | kg/h |
| Design Pressure | 10 – 25 | bar |
| Operating Temperature (Steam) | 150 – 250 | °C |
| Exhaust Gas Inlet Pressure | 0.8 – 1.2 | MPa |
| Material (Tubes) | AISI 321 / 316L SS | – |
| Control System | PLC with remote monitoring | – |
| Typical Lead Time | 15 – 45 days | depending on order size |
All dimensions and pressure ratings can be customized to meet class society approvals and vessel‑specific installation constraints.
Application Scenarios
- Cargo‑ship tank heating – continuous steam supply for crude oil or LNG cargo temperature control.
- Offshore support vessels – auxiliary power generation using exhaust‑heat‑driven turbines.
- Naval warships – low‑profile boiler for onboard galley, laundry, and accommodation heating without sacrificing combat space.
- Research vessels – reliable steam for laboratory equipment and desalination modules.
By integrating a water‑tube boiler directly after the main engine, operators achieve fuel savings of 4‑8 % and lower CO₂ emissions, aligning with IMO Tier III requirements.
Competitive Advantages
• Compact Footprint – Water‑tube layout reduces overall height and frees deck space.
• Rapid Response – Steam generation starts within minutes, supporting variable‑speed operations.
• Robust Materials – High‑grade stainless steel resists corrosion from salty exhaust gases.
• Flexible Integration – Designed for both new builds and retrofits, with standard flange connections and optional remote‑control packages.
• Compliance‑Ready – Engineered to meet ABS, DNV‑GL, and IEC 60335 standards; documentation provided for class approvals.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for a custom‑spec boiler?
Our standard MOQ is one unit, which allows shipyards and distributors to order a single prototype for trial. Larger batches receive volume discounts and priority production slots.
Can the boiler be adapted to different exhaust gas temperatures?
Yes. The heat‑exchange core can be re‑designed with varying tube diameters and spacing to optimise performance for inlet temperatures ranging from 200 °C to 450 °C.
What warranty and after‑sales support are provided?
All units carry a 24‑month manufacturer warranty covering material and workmanship. We also offer on‑site commissioning, training for crew, and a 24‑hour technical hotline.
How does a marine exhaust gas water tube boiler supplier handle certification documentation?
Upon request, we provide full test reports, material certificates, and class‑society approval packages (ABS, DNV‑GL, Lloyd’s). Documentation is aligned with the latest IMO and MARPOL regulations.
Ready to boost your vessel’s energy efficiency?
Contact Our Sales Team Today